KR100345741B1 - Oil filter for internal combustion engine - Google Patents

Abstract

The present invention relates to an oil filter installed in an internal combustion engine, and more particularly, to an oil of an internal combustion engine which can extend the service life by improving the efficiency of removing fine iron and impurities contained in oil such as lubricating oil circulating in the engine. It is about a filter.

The present invention, in the oil filter for filtering the lubricating oil circulating in the engine provided with an oil inlet 13 for lubricating oil flows into the lower surface of the hollow-cylindrical casing 11, the oil outlet 14 for lubricating oil is discharged. A magnetic filter (2) mounted inside the casing (11) and receiving a magnetic metal foil (4) in the inner space for generating a magnetic force of a certain strength so as to adsorb fine iron powder particles contained in the lubricating oil; and the magnetic A pulp filter (3) disposed in a space between the central hole of the filter (2) and the central hole (8) of the casing (11) and finally filtering the primary filtered lubricant while passing through the magnetic filter (2). To provide an oil filter of the internal combustion engine.

Description

Oil Filter for Internal Combustion Engines {OIL FILTER FOR INTERNAL COMBUSTION ENGINE}

The present invention relates to an oil filter installed in an internal combustion engine, and more particularly, to an oil of an internal combustion engine which can extend the service life by improving the efficiency of removing fine iron and impurities contained in oil such as lubricating oil circulating in the engine. It is about a filter.

In general, the lubricating oil circulating in the engine of the automobile is filtered while passing through the oil filter 10 as shown in FIG. 1 to remove impurities and to extend its service life.

The conventional oil filter 10 is composed of a cylindrical casing 11 and a pulp filter 12 installed therein, and the lubricating oil circulating in the internal combustion engine is an oil inlet formed at the lower side of the casing 11. (13) flows into the casing (11) and passes through the pulp filter (12) embedded in the casing (11) to filter impurities, and the filtered oil is passed through the oil outlet (14) to recycle the internal combustion engine. Discharged.

On the other hand, since the lubricating oil circulating in the internal combustion engine generates fine iron particles due to wear of the cylinder, crankshaft, and bearing members, which are engine components, the content in the lubricating oil is increased according to the lubricating oil usage period. As shown in the figure, it gradually increases.

model name Caterpillar 3176B Lubricant brand Shell (15W40)

Metal Impurity Content (ppm) Inspection frequency date Cu Fe Cr Al Si Pb Na Mo Sn Mg 123456 12.1712.2001.0501.2301.3002.21 0346813 01419263249 000000 011001 055657 022224 008101512 000000 011000 01640353237

Therefore, in the conventional oil filter 10, when circulating oil is filtered using only the pulp filter 12, it is difficult to remove impurities such as fine iron powder particles, and foreign substances are fixed to the pulp filter 12 when used for a long time. There was a problem of reducing the air permeability to shorten the service life of the oil filter (10).

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to use a magnetic filter containing a magnetic metal foil combined with a pulp filter filtration ability to remove fine iron powder and impurities contained in oil. To provide an oil filter of an internal combustion engine that can extend the service life of the engine.

1 is a longitudinal sectional view showing an oil filter of a general internal combustion engine;

2 is a longitudinal sectional view showing an oil filter of an internal combustion engine according to the present invention;

Figure 3 is a graph showing the removal efficiency of the fine iron particles when filtering the lubricating oil using the oil filter of the internal combustion engine according to the present invention.

* Explanation of symbols for the main parts of the drawings *

2 ..... magnetic filter 3 ... pulp filter

4 ..... magnetic metal foil 6 ...... magnetic material

8 ..... Central hole 11 ..... Casing

13 .... oil inlet 14 ..... oil outlet

As a technical means for achieving the above object, the present invention,

In the oil filter for filtering the lubricating oil circulating inside the engine having an oil inlet through which the lubricating oil flows in, and an oil outlet through which the lubricating oil is discharged,

A magnetic filter mounted inside the casing and having a plurality of magnetic metal foils randomly filled in the inner space so as to adsorb the fine iron powder contained in the lubricating oil and generating a magnetic force of a predetermined strength;

The central hole of the magnetic filter and the central work of the casing is disposed in the space of the pulp filter for final filtration of the first filtered lubricating oil while passing through the magnetic filter; by providing an oil filter of the internal combustion engine All.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a longitudinal sectional view showing the oil filter of the internal combustion engine according to the present invention, as shown, the oil filter 1 of the present invention can filter the cylindrical casing 11 and the lubricating oil circulating inside the internal combustion engine. It consists of a magnetic filter (2) and a pulp filter (3) installed inside the casing (11).

That is, in the hollow-cylindrical cylindrical magnetic filter 2 mounted in the inner space such that the outer circumferential surface is in contact with the inner circumferential surface of the casing 11, the lubricating oil is easily introduced through the oil inlet 13 of the casing 11. It consists of a porous material to pass to the pulp filter (3) side, the magnetic force of a certain strength to adsorb and remove the fine iron powder contained in the lubricating oil introduced into the inner space of the hollow-cylinder using the unique properties of the magnet The plurality of magnetic metal foils 4 which generate s are freely filled at random enough.

The magnetic metal foil 4 is composed of thin flakes so as to increase the contact area with the lubricating oil to be filtered while increasing the filling rate filled in the limited space in the magnetic filter 11 to improve the filtration efficiency.

Here, the magnetic metal ribbon 4 is a magnetic filter of the casing 11 by selectively employing or mixing a soft magnetic ribbon that can generate a magnetic force by a separate magnetic body and a hard magnetic ribbon having its own magnetic. (2) It is filled and accommodated in the inner space. When the soft magnetic strip is employed as the magnetic metal strip 4 accommodated in the magnetic filter 2 of the casing 11, the outer circumferential surface or the inner space of the casing 11 to impart magnetism to the soft magnetic strip. It is preferable to mount the magnetic body 6 that generates a magnet density of a certain intensity.

The soft magnetic foil is composed of one selected from a material such as amorphous alloy (FeCoSiB), firm alloy (FeNiMn), silicon steel sheet (FeSi), the hard magnetic foil is composed of Alnico (AlNiCo), Select one of materials such as Vicalloy (FeCoV), CuNiFe (CuNiFe) is selected and configured, Table 2 shows the magnetic properties of these soft magnetic and hard magnetic ribbons.

division ingredient Maximum Permeability (μ _max ) Saturation Magnet Density Bs (G) Magnetization (BH) _max (MGOe) Soft magnetic strip Amorphous Alloy Pump Silicon Steel Sheet FeCoSiBFeNiMnFeSi 100.00040.0003.000 6000-16.0007.000 -16.00018.000 - Gyeongja Sungbak University AlnicoVicallyCunico AlNiCoFeCoVCuNiFe - - 1.5 -11.020 -2812 -20

In addition, the trapping force F _m of the magnetic metal ribbon 4 capable of filtering the fine iron powder contained in the lubricating oil is represented by the following Equation 1.

Fm = X × V × H × dH / dx

Here, X: particle magnetization rate, V: volume, H: magnetic field strength, dH / dx: magnetic gradient, the trapping force (F _m) ) is the motion of the fluid in order to adsorb and filter the fine iron particles contained in the lubricating oil Since it must be larger than the energy F _d (F _m F _d ), the magnetic strength can be appropriately designed and manufactured according to the type of metal foil used as the magnetic metal foil 4.

On the other hand, the pulp filter (3) for finally filtering the first filtered lubricating oil while passing through the magnetic filter (2) is the oil outlet 14 through which the central hole and the filtered lubricating oil of the magnetic filter (2) made of a hollow cylinder cylinder exits. It is disposed between the central hole (8) of the casing (11) provided in.

In FIG. 2, reference numeral 15 denotes a backflow preventing rubber plate for preventing backflow of lubricating oil at the oil inlet 13, and 16 is a safety valve.

The operation of the present invention through the following examples.

Lubricant oil circulating in the internal combustion engine is introduced into the magnetic filter 2 mounted in the casing 11 through an oil inlet 13 formed on the lower surface of the casing 11. At this time, since the outer surface of the hollow filter-shaped magnetic filter 2 is made of a porous material, the lubricating oil is introduced through the outer surface.

Since the lubricating oil introduced into the magnetic filter 2 contains fine iron powders due to wear of cylinders, crankshafts and bearings, the fine iron powders are contained in the internal space of the magnetic filter 2. It is adsorbed by the magnetic force of the thin flake magnetic metal foil 4, and is filtered primarily.

Here, in the case where the magnetic metal ribbon accommodated in the magnetic filter 2 of the casing 11 is composed of a hard magnetic ribbon and a soft magnetic ribbon or composed only of a soft magnetic strip, the magnetic body is mounted on the outer circumferential surface or the inner surface of the casing 11. (6), fine iron powder particles are removed and filtered as a magnet of a soft magnetic foil having magnetic properties under the influence of the magnetic flux of the magnetic body (6).

Continuously, the lubricating oil primarily filtered by the magnetic metal foil 4 in the magnetic filter 2 is supplied to the pulp filter 3, which is installed through the porous outer surface, and finally, fine impurities contained in the lubricating oil are filtered. do.

As described above, the lubricating oil from which impurities are completely removed while passing through the magnetic filter 2 and the pulp filter 3 is supplied to the engine through the oil outlet 14 and recycled.

On the other hand, when the air permeability of the magnetic filter 2 and the pulp filter 3 decreases due to a long time filtration action, and the pressure inside the casing 11 increases, lubricating oil does not pass through the filter member and the casing 11 does not pass through. It is recycled through the safety valve (16) installed on the upper center hole (8).

3 is a graph showing the removal efficiency of the fine iron particles when lubricating oil is filtered using the oil filter of the internal combustion engine according to the present invention, the efficiency of removing the fine iron particles contained in the lubricating oil is a magnetic adsorbing iron particles It can be proportional to the capture force (F _M ) of the metal foil (4), the magnetic filter (2) in the magnetic metal foil made of iron-based amorphous alloy foil of the soft magnetic foil band, the magnetic flux of the surface magnetic flux density 1000Gauss (6) is provided in the casing (11) to filter the contaminated lubricant oil, as shown in Figure 3, the efficiency of filtering the fine iron powder contained in the lubricant varies from 30% to 70% depending on the initial iron concentration Since the lubricant used in the engine is purified, its removal efficiency continues to increase.

According to the present invention as described above, by combining the magnetic filter containing the magnetic metal foil and the pulp filter in the casing to which the contaminated lubricating oil is supplied, the fine iron powder contained in the lubricant oil can be adsorbed as the magnetic of the magnetic metal foil. In this way, the first filtered lubricating oil can be finally circulated by pulping with a pulp filter, thereby improving the removal efficiency of fine iron powder, thereby achieving an effect of significantly extending the service life of the oil filter and the lubricating oil.

Claims (5)

In the oil filter for filtering the lubricating oil circulating in the engine by having an oil inlet 13 through which the lubricating oil flows in and a oil outlet 14 through which the lubricating oil is discharged. A magnetic filter 2 mounted inside the casing 11 and having a plurality of magnetic metal foils 4 randomly filled in an inner space to generate a magnetic force of a certain strength so as to adsorb the fine iron powder particles contained in the lubricating oil. Wow, A pulp filter (3) disposed in a space between the central hole of the magnetic filter (2) and the central hole (8) of the casing (11) and finally filtering the first filtered lubricating oil while passing through the magnetic filter (2); Oil filter of the internal combustion engine, characterized in that it comprises a. The method of claim 1, The magnetic metal foil (4) is characterized in that it is equipped with a thin flake to increase the filling area in the limited space in the magnetic filter (2) to increase the contact area with the lubricant to be filtered to improve the filtration efficiency Engine oil filter. The method of claim 1, The magnetic metal foil 4 is characterized in that it is accommodated in the casing (11) by selectively employing or mixing a soft magnetic foil that can generate a magnetic force by a separate magnetic material and a hard magnetic ribbon having its own magnetic Oil filter for internal combustion engines. The method of claim 1, When a soft magnetic strip is employed as the magnetic metal strip 4 accommodated in the casing 11, a magnetic density of a certain intensity is generated on the outer circumferential surface or the inner space of the casing 11 to impart magnetism to the soft magnetic strip. The oil filter of the internal combustion engine, characterized in that for mounting a magnetic material (6). The method of claim 2, The soft magnetic strip is composed of any one of materials such as amorphous alloy (FeCoSiB), firm alloy (FeNiMn), silicon steel sheet (FeSi), the hard magnetic strip is Alnico (AlNiCo), Vicalloy (Vicalloy) The oil filter of an internal combustion engine, characterized in that it is composed of any one of materials such as FeCoV and CuNiFe.